Improvement in heating-stoves



J. L."HANSON.

Heating Stove.

N9. 44.089: Patented Sept. 6. 1864.

Wbfiwwm In??? UNITED STATES PATENT OFFICE.

JOHN L HANSON, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN H EATlNG-STOVES.

Specification forming part of Letters Patent No. 1 1,08 9, datedSeptember 6, 1834- To all whom it may concern.-

Be it known that 1, JOHN L. HANSON, a resident of Boston, in the countyof Suffolk and State of Massachusetts, have invented an Improved Steve;and I do hereby declare the same to be fully described in the followingspecification and represented in the accompanyingdrawings, of which-Figure l is a front elevation, Fig. 2 a vertical and transverse section,and Fig. 3 a vertical and longitudinal section, of it. Figs. 4 and 5 arehorizontal sections taken through th two flue-chambers of the base.

In the said drawings, A denotes the external case or body of the stove,which surrounds a fire-pot, E, rests on a bottom or chambered base, B,and is provided with an ash-chamber, O, which is arranged beneath thegrate D of the said fire-pot. The body or case A makes about thefire-pot a smoke space or chamber, F, which at bottom opens by passagesa a into a similar chamber, G, which extends wholly or partially aroundthe ash chamber.

The fire-pot is provided with a throat, I), which is furnished with anopening, 0, and a door, d, thereto, the fuel for the fire pot beingsupplied to it through the said opening and throat. The ash-chamber alsohas an opening, 6, at its front, such opening 6 being provided with oneor more doors, f f. This latter opening is for the admission of air tothe firepot, as well as for the removal of ashes from the ash-chamber.The hollow base B, by means of a horizontal plate or partition, 9, isdivided into two flue-chambers, h i, within the lower, 1 of which thereare two vertical partitions, lc k, which extend from the top to thebottom of the said flue-chamber z, and from the rear side of it towithin a short distance of its front side, the whole being as shown inFigs. 2, 3, and 5. These partitions divide the flue-chamberi into threefines, lm I, which open into each other by passages 12 a. Two pipes, 00, extend down from the smoke-chamber G, and so as to lead the smoketherefrom into each v of the fluesl Z. Furthermore, in the rear porq q([2, which extends from the plate 9 up to the top plate, 1', of thebase, and also from the two pipes 0 0, in manner as shown in Figs. 2 v

and 4. 11" desirable, there may be an opening, 1', made through the partq of the partil tion q q 1 which opening may be provided with a damperor sliding valve, .9. Over the opening r there is a stand-pipe, t, whichopens out of the flue-space h, and is closed at top. A directdraft pipe,a, provided with a damper, 12, leads out of the smoke-space F around thefire-pot and into the pipe t, which is to be furnished with adischarge-pipe, w, the whole being arranged as shown in the drawings.Besides the partitions q q 1 there are are other partitions, g 1 in theupper finechamber of the base, these latter partitions extending a shortdistance forward from the pipes o 0, as shown in Fig. 4. Heatretainersor corrugated or bent pieces of metal may be arranged within the chamberh, as shown at new and yyy, they being caused to extend from top tobottom of the same. Fig. 6 denotes a transverse and vertical section ofone of the retainers or a, while Fig. 7 is a longitudinal section of oneof those marked J. In the bottom of the base of the stove, andunderneath the hole P, is an opening, 2, which is furnished with aclosing gate or slide, 2, whose rod 2 extends through the middle of theflue-space m and through the front of the base. Furthermore, there isarranged within the smoke-chamber F, encompassing the firepot, a seriesof curved tianges,a a, which go from the top to the bottom of the saidchamber and against opposite sides of it, as shown in Figs. 2 and 3.They serve to cause the smoke and volatile products of combustion, whilepassing down the chamber F, to course against its sides or surfaces, andthereby heat themto better advantage than would be the case were thereno such flanges within it.

The operation of this stove may be thus described: While the damper o ofthe directdraft flue is closed, the smoke and heated gases escaping fromthe fire-potwill circulate within the space around and above it, andfrom thence will pass through the pipes 0 0 and into the tines ll. Fromthese flues It the smoke and gases will pass through the passages n nand into'and through the flue m thence up through the hole 1) and intothe flue-space that is formed by the pipes o 0 and the partitions p p pthence into the fines on the right, 850.; thence up the standpipe and tothe chimney or discharge-flue. In their passage through the stove thesmoke and hot gases will impart heat to its case and base, and this heatwill be absorbed and radiated thereby to excellent advantage. Wheneverit may be desirable to lead the smoke directly into the standpipewithout first causing it to flow through the base, the damper '0 shouldbe opened. So, whenever it may be desirable to admit air into the basein order to diminish the draft through it, such may be accomplished bymoving the slide 2 so as to more or less increase the opening .2.

I claim The combination and arrangement of the smoke spaces or chambersI" and G about the firepot and the ash chamber, With the heating-pipes 00 and the base-flues arranged around and below such pipes, substantiallyas specified.

JOHN L. HANSON.

Witnesses:

R. H. EDDY, F. P. HALE, Jr.

